Technical description and composition of the TV AIWA 40LE5120, type of panel and applicable modules. The composition of the modules.AIWA LED
Model: 40LE5120
Chassis / Version: 5800-A6M32G-0P10
Panel: RDL400FY (QDO-400)
LED driver (backlight): integrated into MainBoard
PWM LED driver: CB98AEGN SMD 16pin
Power Supply (PSU): integrated into MainBoard
PWM Power: SMD 8pin
MainBoard: 5800-A6M32G-0P10
IC MainBoard: SPI Flash: GD25Q64
Tuner: CH DM121 C816RH
Specifications 40LE5120
AIWA 40LE5120
General repair guidelines for TV LCD LED
Possible manifestations of defects
- AIWA 40LE5120 TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up and do not blink.
In such cases, the common power source is often faulty - an AC / DC voltage converter, which is combined with the elements of the main board 5800-A6M32G-0P10. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work abnormally in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode, or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. SMD 8pin PWM controllers, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
As a rule, in such cases there is no display backlight. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a failure, the zener diode PN junction will either be cut off or broken into short-circuit.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the 5800-A6M32G-0P10 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - SPI Flash: GD25Q64 with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before changing the tuner CH DM121 C816RH, if it is not possible to tune to television channels, you should make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Owners and users of the AIWA 40LE5120 TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> AIWA 40LE5120, Main: 5800-A6M32G-0P10, Panel: RDL400FY(QDO-400)
The appearance of the MainBoard 5800-A6M32G-0P10 is shown in the figure below:5800-A6M32G-0P10
5800-A6M32G-0P10 can be used in TVs:
AIWA 40LE4120 (Panel RDL400FY), AIWA 40LE5120 (Panel RDL400FY (QDO-400)).
Key Features of AIWA 40LE5120:
The matrix (LED panel) RDL400FY (QDO-400) is installed.
To power the backlight LEDs, a converter is used, combined with the main board 5800-A6M32G-0P10, controlled by a CB98AEGN SMD 16pin PWM controller.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter using SMD 8pin microcircuits.
MainBoard - the main board (motherboard) is a 5800-A6M32G-0P10 module, using SPI Flash chips: GD25Q64 and others.
The CH DM121 C816RH tuner provides TV reception and channel tuning.
Trademark: AIWA, Model: 40LE5120.
Briefly from the TV: LCD, LED backlight, 40 ", 1920x1080, 1080p Full HD, DVR, there is a satellite tuner, sound: 12W, HDMI connectors: 2.
The composition uses MainBoard 5800-A6M32G-0P10 and LCD-panel RDL400FY (QDO-400). The power supply is combined with the MainBoard.
AIWA 40LE5120 TV with RDL400FY (QDO-400) LCD, 40 "(102 cm) diagonal, 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 100,000: 1 is achieved by special operation control LEDs In the manufacturing technology of the display of this model, LED backlighting is implemented.
The RDL400FY (QDO-400) panel and the software of the 5800-A6M32G-0P10 motherboard provide viewing of broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in a graphical decomposition according to the standard 1080p (Full HD).
Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), MKV, JPEG.
The power of the sound system 12 W (2x6 W) provides two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, HDMI x2, MHL, USB. An output for connecting headphones is provided. The digital tuner is capable of receiving television channels in the standards DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2.
Overall dimensions: with stand 907x562x207 mm, without stand 907x523x93 mm.
The mass of the TV: 8.2 kg.
Attention! The panel of the RDL400FY (QDO-400) of the AIWA 40LE5120 LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.
